March 29, 2023, 4:32am
[ERROR:email@example.com] global persistence.cpp:505 open Can’t open file: ‘haarcascade_frontalface_default.xml’ in read mode
put_char @ opencv.js:30
opencv.js:30 [ERROR:firstname.lastname@example.org] global persistence.cpp:505 open Can’t open file: ‘haarcascade_eye.xml’ in read mode
Any clue why im getting these errors? The files are there
let faceCascade = new cv.CascadeClassifier()
let eyeCascade = new cv.CascadeClassifier()
// load pre-trained classifiers
March 29, 2023, 6:00am
still looks like a ‘file not found’ problem to me
(check file path)
March 29, 2023, 7:24am
its same directory as script. Used full path too, same error
as berak it seems a
file not found or file already opened error :
file = fopen(filename.c_str(), !write_mode ? "rt" : !append ? "wt" : "a+t");
CV_LOG_ERROR(NULL, "Can't open file: '" << filename << "' in " << (!write_mode ? "read" : !append ? "write" : "append") << " mode");
March 29, 2023, 8:21am
im using the opencv tutorial for eye detection of that helps
OpenCV: Face Detection using Haar Cascades
please learn what a “current working directory” is.
March 29, 2023, 7:06pm
dont understand what im supposed to do. both files are literally there and as said i used both relative and full paths. im on windows
“same directory as script” means nothing. relative paths aren’t resolved relative to the
source file, nor the directory containing the executable, but the Current Working Directory.
if you used an absolute path, you should show us this path. perhaps it’s broken.
and you really must test the validity of the path and the existence of the file like so:
File f = new File(filePathString);
// that would be sensible to check
On windows when you copy file name using mouse sometime there is an first character hidden
March 30, 2023, 6:44am
ok i tried to check if the file exists with full path and i get
Not allowed to load local resource:
I guess this means its a chrome problem? I tried everything, allow-read-files flag, another server extention, clear dns etc nothing
EDIT: not a chrome problem i get this in edge
Not allowed to load local resource: file:///C:/Users/User/Desktop/dist/haarcascade_frontalface_default.xml
Also note that im not using backend. I want the file load to happen on the browser
That’s not an opencv problem. Check
stackoverflow with error message
March 30, 2023, 7:40am
i swear this thing is retarded. i setup a node server so i dont need to access the users disk and i still get the error.
I have never heard of that nor experienced it. please explain what this is.
I completely missed that you’re dealing with OpenCV.js. sorry for giving you java code for testing the existence of a file.
you need to know where your code runs. does it run in the browser, or in the node server?
do you run this in any virtualization?
all those kinds of things. you need to check them, and you need to be aware of the amount of abstraction/complication you have.
March 30, 2023, 7:46am
no prob but i still have no idea what the problem is. I thought it was the fact that browser cant access client files so i put them in a server but error remains
So the server has the xml files and also serves the html. Then the html uses the xml files from the server but i get the same error
your code does not run in the node server. it runs in the browser.
decide where you want it to run. do you want the user’s browser to execute the program, or do you want your server to execute it?
I’m sure there are ways to get access to the haar cascade file from inside the browser. that was the original intention of OpenCV.js
March 30, 2023, 7:54am
check yourself. Run
Got it through virustotal (c576aad2419723733692be22fe97800c0903c8b612ec36891a4fa3ff31a98d90) just to be sure
a “LEFT-TO-RIGHT EMBEDDING”… might happen to people with RTL languages set in their UI. it
never happens to many people, and it probably happens a lot to some people. I am inclined to doubt that this is the case here.
March 30, 2023, 5:54pm